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existing water level data. Task 39 was undertaken in Phases 1 and 2 and included the collection <br />of autumn water level measurements. The objectives of these tasks are as follows: <br />1. Compile existing aquifer water level information and create aHydroBase-compatible <br />database with data from the Denver Basin and South Platte Alluvium Regions. <br />2. Identify additional data needs in these Regions. <br />3. Support the design of the groundwater field program. <br />4. Enhance HydroBase with aquifer water level data collected during the field activities. <br />5. Collect data to support future development and calibration of a groundwater model. <br />This Technical Memorandum (TM) summarizes the compilation, analysis, and mapping of <br />water level data of the Denver Basin bedrock aquifers. <br />Approach <br />The following table summarizes the sections contained in this TM and identifies which section <br />pertains to the objectives outlined above. <br />Section Descri tion <br />1.0 Water Level Data Collection and Anal sis <br />1.1 Sources of Data <br />1.2 Data Anal sis and Processin <br />1.3 Database Queries <br />1.4 Grid Development and Contourin <br />1.5 Water Level Trend Anal sis <br />2.0 Water Level Database <br />2.1 Database Qualit Control <br />2.2 Database Structure <br />3.0 Results <br />3.1 Water Level Surface Anal sis <br />3.2 Water Level Anal sis Trends <br />3.3 Hydrographs <br />4.0 Summar and Conclusions <br />5.0 Recommendations <br />6.0 References <br />1.0 Water Level Data Collection and Analysis <br />Information on aquifer water levels are important in evaluating aquifer yield, stream-aquifer <br />interactions, drawdown due to pumping, and the direction and rate of groundwater flow. This <br />section describes the sources of existing water level data, summarizes the methods used to <br />screen these data for reliability and usability, and discusses the analysis and processing of <br />historic aquifer water level data for the Denver Basin Region. <br />SPDSS Phase 3 Task 44.2 TM -Final 2 <br />11/28/2006 <br />